Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee5efdd5ec93d2c669386e878ddff53e56d160dc3bcf83401103978db740560b' 
  AND token = 'OzDL1ac7RfDxJWTgmPEnqVlfscYtfCrWR0WJaieGu9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}